Patents by Inventor Chen Lien-Sheng

Chen Lien-Sheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ratchet tool
    Patent number: 6116122
    Abstract: A ratchet tool includes a head, a neck extending inclinedly from the head and a handle connected the neck. The handle has a ridge extending therefrom and two longitudinal grooves are defined between the two sides of the ridge and the outside of the handle. Grip material is wrapped the handle portion with the top surface of the ridge being located slightly higher than the surface of the grip material received in the two longitudinal grooves. The top surface of the ridge portion is visible in the grip material.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: September 12, 2000
    Inventor: Chen Lien-Sheng